Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 11 of 11 for “"Grazing Incidence Small Angle X-ray Scattering (GISAXS)"”.
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Self-assembly of silicon-containing triblock copolymer and terpolymers
… field theory (SCFT) modeling and in situ grazing-incidence small-angle X-ray scattering (GISAXS) measurement, the phase behavior of advanced polymer architectures can be revealed in details.
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Functional 2D nanoparticle/polymer array : interfacial assembly, transfer, characterization, and coupling to photonic crystal cavities
… and patternable nanoparticle/polymer monolayer arrays by evaporation-induced self-assembly at a fluid interface. The ultra-thin monolayer nanoparticle/polymer arrays are sufficiently robust that they can be transferred to arbitrary substrates, even with complex topographies. More importantly, the …
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Nucleation and Growth of Calcium Carbonate and Sulfate Minerals from Solutions Close to Equilibrium
… conditions was investigated using in situ grazing incidence small angle X-ray scattering (GISAXS). The results indicated that different organics regulated the sizes, phases, and Mg contents of heterogeneous (Cax,Mg1-x)CO3 compared with homogeneous precipitates in bulk solution. The calcium …
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Porous Graded Materials Derived From Block Copolymer Self-Assembly For Water And Energy Applications
… SNIPS polymeric membranes is discussed. In situ grazing incidence small-angle X-ray scattering (GISAXS) was employed to study the structure evolution on doctor-bladed BCP films for membrane purposes. Transient ordered structures were observed during solvent evaporation, providing insights into …
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Structural Characterization of the Interfacial Structure of the Working Electrode in Dye-sensitized Solar Cells Using X-ray and Neutron Techniques
… of the working electrode in DSSCs using X-ray and neutron techniques. Chapters 1 and 2 provide an introduction to X-ray reflectometry (XRR) and neutron reflectometry (NR) techniques, i.e., the principal analytic tools used for research carried out in the context of this thesis. Chapters 3, …
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Novel analytical method for investigating compositional driven ion-induced nanopatterning of multicomponent materials
… of GaSb is investigated using real-time in-situ Grazing Incidence Small Angle X-ray Scattering (GISAXS) at Brookhaven National Lab. This experiment was setup such that GISAXS scans were taken at much smaller ion fluence intervals, about 1E15cm-2 per scan. These fluence steps allow for a much more …
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Molecular Design Of Lanthanide Binding Tag Peptides For Nanoparticle Assisted Interfacial Separation Of Rare Earth Elements
… residue functions as a conformational gate: for smaller cations such as Lu<sup>3+</sup>, it remains locked via an intramolecular hydrogen bond, whereas for larger cations like La<sup>3+</sup>, the gate opens, allowing water molecules to penetrate the binding pocket. These insights provide crucial …
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The Use of Synchrotron Radiation to study Overgrowth Phenomena in InAs/GaAs Nanostructures
… using synchrotron radiation. Surface-sensitive grazing incidence small angle x-ray scattering (GISAXS) and grazing incidence diffraction (GID) are applied to study shape, strain, and interdiffusion in self-organised grown nanostructures. The technique of anomalous x-ray diffraction at the weak …
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Chemistry of Nanoscale Solids and Organic Matter in Sustainable Water Management Systems
… adsorption onto iron(III) (hydr)oxide. In situ grazing incidence small-angle X-ray scattering (GISAXS) measurements suggested that SRDOM decreased iron(III) (hydr)oxide nucleus sizes and growth rates. A combined analysis of SRDOM and other proteinaceous or labile DOM (alginate, polyaspartate, …
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Thin liquid films with nanoparticles and rod-like ions as models for nanofluidics
… differently shaped ions and molecules to very small spaces, or to subject them to controlled forces. This makes the foam films a unique “device” available to obtain information about fluidic systems in nanometer dimensions. The main goal of this thesis was to study nanofluidic processes using …
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Deciphering the role of surface composition and topography in self-organized ion-induced nanopatterning of multicomponent semiconductors with in-situ and in-operando metrology
… nanopatterning on GaSb utilizing in-operando Grazing-Incidence Small-Angle X-ray Scattering (GISAXS), X-ray Photoelectron Spectroscopy (XPS), and Low Energy Ion Scattering Spectroscopy (LEISS) techniques, the effects of both cryogenic and high temperatures on ion-induced nanopatterning of …